Spy Camera

When I was growing up, the world of secret spying, invisible ink and the spy camera were just fantasy play ideas. You could buy toy kits with plastic cameras and other spy paraphernalia, but now these things are widely available for real and at a price your average person can easily afford. Whether for industrial alarm systems or domestic surveillance/protection, you can easily pick up a quality multi-camera system for very little outlay. Not only that, but this type of equipment is not even difficult to set up. You don't have to be a security expert to have a system up and running in no time. Expanded memory avaialability also means that images and audio can be stored on hard-drives negating the need for endless piles of tapes lying around the place.
Todays surveillance systems are inexpensive, high quality and easy to install which accounts for why there are so many of them installed.